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jkv45 · October 27th, 2014, 08:57 AM

What is the battery voltage not running and cranking?

If you are getting 12.7V sitting and over 11V cranking I would think it could be more related to the alternator than the rectifier. As I understand it, the rectifier controls and limits the output so it doesn't just keep increasing with RPM after a set point.

Check around for an exact spec, but I think you should see around 13V at idle and close to 14V at 4000 RPMs.

October 27th, 2014, 08:57 AM	#21
jkv45 Rev Limiter Name: Jay Location: WI Join Date: Jul 2013 Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes Posts: A lot. MOTM - Jun '18, Oct '16	What is the battery voltage not running and cranking? If you are getting 12.7V sitting and over 11V cranking I would think it could be more related to the alternator than the rectifier. As I understand it, the rectifier controls and limits the output so it doesn't just keep increasing with RPM after a set point. Check around for an exact spec, but I think you should see around 13V at idle and close to 14V at 4000 RPMs.